Forward MIME types to BrowserPlugin when a viewer is specified.

chrome/common/extensions/api/streams_private.idl

Index: chrome/common/extensions/api/streams_private.idl
diff --git a/chrome/common/extensions/api/streams_private.idl b/chrome/common/extensions/api/streams_private.idl
index 2d3badaa9a225760c474a66f5148ae817ce18ced..53e0eb985cf1111c62f8f1fc8b7f11363b117952 100644
--- a/chrome/common/extensions/api/streams_private.idl
+++ b/chrome/common/extensions/api/streams_private.idl
@@ -14,9 +14,11 @@ namespace streamsPrivate {
     // The URL that the stream can be read from.
     DOMString streamUrl;
 
-    // The ID of the tab that opened the stream. If the stream is not opened in
-    // a tab, it will be -1.
-    long tabId;
+    // The ID of the tab that opened the stream.

[not at google - send to devlin, 2014/04/30 15:42:43]

"Either/exactly-one-of |tabId| or |viewId| will be specified."?

[Zachary Kuznia, 2014/05/01 00:38:22]

Reverted this to old language and behavior.

+    long? tabId;
+
+    // The ID of the view that will render the stream.

[not at google - send to devlin, 2014/04/30 15:42:43]

ditto

[Zachary Kuznia, 2014/05/01 00:38:22]

Clarified the conditions where this will be set.

+    DOMString? viewId;
 
     // The amount of data the Stream should contain, if known.  If there is no
     // information on the size it will be -1.